It is possible to create a Calculator program using shell script with zenity?
Please provide some references since i cannot find much in man page. Thanks

I think, it might be possible, but for a calculator program you're much better off using GTK, Qt or Tcl/Tk. Zenity is for small dialogs, not full-blown GUI applications.

http://linux.softpedia.com/progDownl...oad-30595.html <-This is a front-end for google's calculator.

Even if you didn't use this you could read the text typed in zenity, write it to a file or just put in into a variable, and then process it with a calculator program (like "bc"). So for example, you get zenity to read some text, put it into a variable, echo that variable into a file, then bc < that_file. Then put that result into another window. (Also you'd have to delete the temporary file)
So, everytime you want to calculate something you get a small window to put what to calculate, then another one telling you the result.